CEMCO’s Self Furred Diamond Metal Lath “Grooved” is manufactured with 5 “V”-grooves in the lath in lieu of standard “dimples.” These 5 grooves provide the necessary ¼” furring off the sheathing’s surface to allow for proper embedment and keying of the  scratch coat on all types of walls. A saturated black asphalt paper complying with Federal Spec. No. UUB-790A Style 2 Grade D. Manufactured with a 3" lap for weathered application.